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V-Lab
V-Lab

CDX/CBOE NA High Yield 1-Month Volatility Index (BP Volatility) Zero Slope Spline-GARCH Volatility Analysis

Inactive

Last recorded values (Monday, August 17th, 2026):

1 Day

110.34%

1 Week

112.47%

1 Month

115.84%

Analysis last updated: Wednesday, September 2, 2026 at 06:28 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CDX/CBOE NA High Yield 1-Month Volatility Index (BP Volatility) S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 5, 2012 to Aug 14, 2026

Model Insight

This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 4 trading days.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

Time-varying baseline: volatility reverts to a slowly-shifting spline trend
ParamValuet-stat
ωconst0.7787
15.54***
αARCH0.0874
4.76***
βGARCH0.7557
15.71***
γi Spline Coefficients
K=1
γ1-0.0026
-4.07***

0.843

Persistence

4d

Half-life
τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.7787
15.54***
α

ARCH

Response to squared shocks

0.0874
4.76***
β

GARCH

Volatility persistence

0.7557
15.71***
γi Spline Coefficients
K=1
γ1-0.0026
-4.07***

Persistence:

0.843

Half-life:

4 days